The present invention provides an improved method for flushing a solvent through a line set of a condenser, compressor, and routing of heat ventilation and air-conditioning, and a high-pressure to low-pressure coupling device. The novel device is operable for joining the high-pressure and low-pressure lines and eliminates the need for having multiple technicians present for conducting a line set flush.

Devices, systems, and methods are disclosed for cooling using both air and/or liquid cooling sub circuits. A vapor compression cooling system having both an air and liquid cooling sub circuit designed to service high sensible process heat loads that cannot be solely cooled by either liquid or air is provided.

Devices, systems, and methods are disclosed for cooling using both air and/or liquid cooling sub circuits. A vapor compression cooling system having both an air and liquid cooling sub circuit designed to service high sensible process heat loads that cannot be solely cooled by either liquid or air is provided.

A refrigerant charging device and a refrigerant charging system include a refrigerant charging flour path having a refrigerant charging port connected to a refrigerant flow path of an air conditioner, a valve provided at the refrigerant charging flow path, and a control device configured to control the valve. The control device includes a discharging superheat calculator configured to calculate the discharging superheat degree from a refrigerant temperature and a refrigerant pressure at a discharge side of a compressor, and a valve controller configured to control the opening and closing state of the valve based on the calculated discharging superheat degree calculated by the discharge super-heat calculator.

A refrigerant charging device and a refrigerant charging system include a refrigerant charging flour path having a refrigerant charging port connected to a refrigerant flow path of an air conditioner, a valve provided at the refrigerant charging flow path, and a control device configured to control the valve. The control device includes a discharging superheat calculator configured to calculate the discharging superheat degree from a refrigerant temperature and a refrigerant pressure at a discharge side of a compressor, and a valve controller configured to control the opening and closing state of the valve based on the calculated discharging superheat degree calculated by the discharge super-heat calculator.

It is an object of the present invention to provide an apparatus and method which satisfies the below three requirements at once. (1) The composition ratio of mixed refrigerant in a base material container at the time of shipment is appropriate. (2) The composition ratio of mixed refrigerant is not changed when it is filled into a heat pump system. (3) Mixed refrigerant gets uniformly dispersed while circulating in a heat pump system. There is provided a mixed refrigerant producing apparatus comprising a base material container containing mixed refrigerant separated in gas and liquid phases, a gas-liquid mixing device capable of uniformly mixing the gas and liquid phases of the mixed refrigerant, a liquid-phase valve allowing the liquid phases of the mixed refrigerant in said base material container to be introduced into said gas-liquid mixing device, a gas-phase valve allowing the gas phases of the mixed refrigerant in said base material container to be introduced into said gas-liquid mixing device and an outlet valve allowing the mixed refrigerant in said gas-liquid mixing device to be filled into a small portable container, wherein said outlet valve opens when said gas-liquid mixing device has been operated during a predetermined time to uniformly mixing the mixed refrigerant contained therein.

It is an object of the present invention to provide an apparatus and method which satisfies the below three requirements at once. (1) The composition ratio of mixed refrigerant in a base material container at the time of shipment is appropriate. (2) The composition ratio of mixed refrigerant is not changed when it is filled into a heat pump system. (3) Mixed refrigerant gets uniformly dispersed while circulating in a heat pump system. There is provided a mixed refrigerant producing apparatus comprising a base material container containing mixed refrigerant separated in gas and liquid phases, a gas-liquid mixing device capable of uniformly mixing the gas and liquid phases of the mixed refrigerant, a liquid-phase valve allowing the liquid phases of the mixed refrigerant in said base material container to be introduced into said gas-liquid mixing device, a gas-phase valve allowing the gas phases of the mixed refrigerant in said base material container to be introduced into said gas-liquid mixing device and an outlet valve allowing the mixed refrigerant in said gas-liquid mixing device to be filled into a small portable container, wherein said outlet valve opens when said gas-liquid mixing device has been operated during a predetermined time to uniformly mixing the mixed refrigerant contained therein.

A pumped refrigerant system can include a condenser, a pump coupled downstream of the condenser, an evaporator assembly coupled downstream of the pump, the condenser being coupled downstream of the evaporator assembly, and a refrigerant heating assembly coupled downstream of the pump, the condenser being coupled downstream of the refrigerant heating assembly. The refrigerant heating assembly can include a tank and a heating element coupled to the tank and configured to heat refrigerant within the tank. An input valve can be configured to selectively allow the pump to push refrigerant into the tank. An output valve can be configured to selectively inject heated refrigerant from the tank into plumbing upstream of the condenser.

A pumped refrigerant system can include a condenser, a pump coupled downstream of the condenser, an evaporator assembly coupled downstream of the pump, the condenser being coupled downstream of the evaporator assembly, and a refrigerant heating assembly coupled downstream of the pump, the condenser being coupled downstream of the refrigerant heating assembly. The refrigerant heating assembly can include a tank and a heating element coupled to the tank and configured to heat refrigerant within the tank. An input valve can be configured to selectively allow the pump to push refrigerant into the tank. An output valve can be configured to selectively inject heated refrigerant from the tank into plumbing upstream of the condenser.

A universal cap configured for sealing a refrigerant service port of an air conditioning system includes a cap body with a closed end and a connection end. The connection end is configured to attach and seal the cap body to a universal quick disconnect exterior of the refrigerant service port. Wherein the universal cap is designed and configured to prevent refrigerant from leaking from the refrigerant service port. Wherein the closed end of the cap body does not include any holes, openings, or fittings, wherein the only hole, opening or fitting of the cap body is via the connection end.